| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.ignite.internal.util; |
| |
| import org.apache.ignite.internal.util.typedef.*; |
| import org.apache.ignite.internal.util.typedef.internal.*; |
| |
| import java.util.*; |
| |
| /** |
| * Lean set implementation. Internally this set is based on {@link GridLeanMap}. |
| * |
| * @see GridLeanMap |
| * |
| */ |
| public class GridLeanSet<E> extends GridSetWrapper<E> implements Cloneable { |
| /** */ |
| private static final long serialVersionUID = 0L; |
| |
| /** |
| * Creates a new, empty set with a default initial capacity, |
| * load factor, and concurrencyLevel. |
| */ |
| public GridLeanSet() { |
| super(new GridLeanMap<E, Object>()); |
| } |
| |
| /** |
| * Constructs lean set with initial size. |
| * |
| * @param size Initial size. |
| */ |
| public GridLeanSet(int size) { |
| super(new GridLeanMap<E, Object>(size)); |
| } |
| |
| /** |
| * Creates a new set with the same elements as the given collection. The |
| * collection is created with a capacity of twice the number of mappings in |
| * the given map or 11 (whichever is greater), and a default load factor |
| * and concurrencyLevel. |
| * |
| * @param c Collection to add. |
| */ |
| public GridLeanSet(Collection<E> c) { |
| super(new GridLeanMap<>(F.zip(c, VAL))); |
| } |
| |
| /** {@inheritDoc} */ |
| @SuppressWarnings( {"unchecked", "CloneDoesntDeclareCloneNotSupportedException"}) |
| @Override public Object clone() { |
| try { |
| GridLeanSet<E> clone = (GridLeanSet<E>)super.clone(); |
| |
| clone.map = (Map<E, Object>)((GridLeanMap)map).clone(); |
| |
| return clone; |
| } |
| catch (CloneNotSupportedException ignore) { |
| throw new InternalError(); |
| } |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public String toString() { |
| return S.toString(GridLeanSet.class, this, "elements", map.keySet()); |
| } |
| } |